금형 내 프레넬 렌즈표면 열유속의 변화특성 분석
Analysis of Thermal Characteristics for A Fresnel Lens in Injection Mold
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초록
Recently injection mold processing is necessary for the development of efficient solar concentrator system with a Fresnel lenses. Heat transfer mechanism in the Fresnel lens manufacturing process have a significant influence on precision machining and optical performance of solar power generation. In this study, we analyzed the thermal characteristics of temperature and heat flux distributions near the lens for transient molding process using CFD method. Initially for one second fast temperature variation on the upper surface of the lens leads to high heat flux distribution. It is gradually cooled to around 128℃ over a period of 60 seconds which is largely affected by the mold structure and the characteristics of the cooling lines. There is also high heat flux occurred on the lens upper side and lower surfaces with rapid temperature change. These results can be applied as fundamental design data for the manufacturing process in the development of Fresnel lenses.
Abstract
Recently injection mold processing is necessary for the development of efficient solar concentrator system with a Fresnel lenses. Heat transfer mechanism in the Fresnel lens manufacturing process have a significant influence on precision machining and optical performance of solar power generation. In this study, we analyzed the thermal characteristics of temperature and heat flux distributions near the lens for transient molding process using CFD method. Initially for one second fast temperature variation on the upper surface of the lens leads to high heat flux distribution. It is gradually cooled to around 128℃ over a period of 60 seconds which is largely affected by the mold structure and the characteristics of the cooling lines. There is also high heat flux occurred on the lens upper side and lower surfaces with rapid temperature change. These results can be applied as fundamental design data for the manufacturing process in the development of Fresnel lenses.
참고문헌 (8)
- Bak, D. I, "Analysis of Thermal Characteristics for A LED Lens in Mold Core System", Journal of the Korean Society of Mechanical Technology, 24(6), pp.1296~1302 (2022)
- Song, M. J, "Cure and Heat Transfer Analysis in LED Silicone Lens using a Dynamic Cure Kinetics Method", Journal of the Transactions of Materials Processing, 24(2), pp.101~106 (2015)
- Lee, G. H, "Thermal simulation analysis of a solar cell module using PMMA concentration lens", The Society of Air-Conditioning and Refrigerating Engineers of Korea, 2013(6), pp.826~828 (2013)
- Lee, Suk. Young, "Thermal Flow Analysis for Development of LED Fog Lamp for Vehicle", Journal of the Korean Energy Society, 28(4), pp.35~41 (2019)
- Solidworks Inc, "User’s Guide", ~ (2020)
- Freeland, B, "A Review of Polylactic Acid as a Replacement Material for Single-Use Laboratory Components", Journal of the MDPI Society, 15(2989) (2022)[DOI]
- Chiad, J, S, "The Study and analysis of Stress Distribution Subjected on the Replacement Knee Joint Components Using Photo-Elasticity and Numerical Methods", International Journal of Mechanical and Production Engineering Research and Development, 8, pp.449~464 (2018)
- ANSYS Inc, "Workbench User’s Guide", ~ (2023)